Specification: Spherical -25?+25D 0.01/0.12/0.25D steps Cylinder -9.99?+9.99D 0.01/0.12/0.25D steps Axis 0°?180° 1° steps Addtion 0?+9.99D 0.01/0.12/0.25D Prism 0?6? 0.01/0.12/0.25? Pupil Distance Pupil Distance?right, left? 40?86mm 0.5mm steps Lens Diameter ? 5?120mm Monitor ?5.7??LCD Monitor (5.7inches) Power supply AC200?240v 50HZ 40VA Packin Size and G.W 220(W)320(D)430(H)mm·mm·mm·/aprox. 7kg